Commit 8f9c6173 authored by Kashyap Desai's avatar Kashyap Desai Committed by Martin K. Petersen
Browse files

scsi: mpi3mr: Add bios_param SCSI host template hook 

Link: https://lore.kernel.org/r/20210520152545.2710479-13-kashyap.desai@broadcom.com


Cc: sathya.prakash@broadcom.com
Reviewed-by: default avatarHannes Reinecke <hare@suse.de>
Reviewed-by: default avatarTomas Henzl <thenzl@redhat.com>
Reviewed-by: default avatarHimanshu Madhani <himanshu.madhani@oracle.com>
Signed-off-by: default avatarKashyap Desai <kashyap.desai@broadcom.com>
Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
parent ff9561e9

drivers/scsi/mpi3mr/mpi3mr_os.c

+41 −0
Original line number Diff line number Diff line
@@ -2050,6 +2050,46 @@ static int mpi3mr_build_sg_scmd(struct mpi3mr_ioc *mrioc, 
	return ret;

}



/**

 * mpi3mr_bios_param - BIOS param callback

 * @sdev: SCSI device reference

 * @bdev: Block device reference

 * @capacity: Capacity in logical sectors

 * @params: Parameter array

 *

 * Just the parameters with heads/secots/cylinders.

 *

 * Return: 0 always

 */

static int mpi3mr_bios_param(struct scsi_device *sdev,

	struct block_device *bdev, sector_t capacity, int params[])

{

	int heads;

	int sectors;

	sector_t cylinders;

	ulong dummy;



	heads = 64;

	sectors = 32;



	dummy = heads * sectors;

	cylinders = capacity;

	sector_div(cylinders, dummy);



	if ((ulong)capacity >= 0x200000) {

		heads = 255;

		sectors = 63;

		dummy = heads * sectors;

		cylinders = capacity;

		sector_div(cylinders, dummy);

	}



	params[0] = heads;

	params[1] = sectors;

	params[2] = cylinders;

	return 0;

}



/**

 * mpi3mr_map_queues - Map queues callback handler

 * @shost: SCSI host reference
@@ -2493,6 +2533,7 @@ static struct scsi_host_template mpi3mr_driver_template = { 
	.slave_destroy			= mpi3mr_slave_destroy,

	.scan_finished			= mpi3mr_scan_finished,

	.scan_start			= mpi3mr_scan_start,

	.bios_param			= mpi3mr_bios_param,

	.map_queues			= mpi3mr_map_queues,

	.no_write_same			= 1,

	.can_queue			= 1,